User`s guide
Touchstone TM401 Telephony Modem User’s Guide 3
Safety Getting Started Installation Ethernet Configuration Usage Troubleshooting Glossary
Safety Requirements
ARRIS Telephony Modems comply with the applicable requirements for
performance, construction, labeling, and information when used as
outlined below:
• The Telephony Modem is designed to be installed directly into a
telephone.
• Connecting the Telephony Modem to the home's existing tele-
phone wiring should only be performed by a professional in-
staller.
• Do not use product near water (i.e. wet basement, bathtub,
sink or near a swimming pool, etc.), to avoid risk of electrocu-
tion.
• Avoid using and/or connecting the equipment during an electri-
cal storm, to avoid risk of electrocution.
• Do not locate the equipment within 6 feet (1.9 m) of a flame or
ignition source, to avoid damage (i.e. heat registers, space
heaters, fireplaces, etc.).
• Use only power supply and power cord included with the equip-
ment.
• Equipment should be installed near the power outlet and should
be easily accessible.The RF drop cable’s shield must be ground-
ed at the building/residence either close to the point of en-
trance or at the point of attachment. It should be grounded as
close as practical to the building/residence AC ground to mini-
mize grounding connector length and thereby limit the poten-
tial voltage differences between the cable TV coaxial cable and
other grounding systems. Refer to the individual country’s Na-
tional Electric Code for further details.
• In areas of high surge events or poor grounding situations and
areas prone to lightning strikes, additional surge protection
may be required (i.e. PF11VNT3 from American Power Conver-
sion) on the AC, RF, Ethernet and Phone lines.
• When the embedded multimedia terminal adapter (EMTA) is
connected to a local computer through the Ethernet cable, the
computer must be properly grounded to the building/residence
AC ground network. All plug-in cards within the computer must
be properly installed and grounded to the computer frame per
the manufacturer’s specifications.
CAUTION
Connecting the Telephony Modem to the home's
existing telephone wiring should only be performed
by a professional installer. Physical connections to
the previous telephone provider must be removed
and the wiring must be checked; there must not be
any voltages. Cancellation of telephone service is not
adequate. Failure to do so may result in loss of
service and/or permanent damage to the EMTA.